Imp (Current at maximum power)
The current measurement of a PV module when a load is applied to the string, i.e., the PV inverter is producing.
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What does Imp (Current at maximum power) mean?
The current measurement of a PV module when a load is applied to the string, i.e., the PV inverter is producing.
What should designers verify about Imp (Current at maximum power) before selecting PV equipment?
Current at maximum power is the current level at the module's maximum power point under specified test conditions. It helps designers understand operating current and compare it with input-current ratings for inverters, optimizers, conductors, and protection devices.
Practical design considerations
- Check the term against the current datasheet and installation manual, not only a product overview.
- Consider temperature, irradiance, string length, and equipment input limits before applying the value.
- Use the same units and test conditions when comparing products or calculations.
Related Tigo Support: For design, installation, commissioning, or troubleshooting details, see TS4 PV Module Compatibility.